Derivatives of bromine are much more active than the corresponding one of chlorine.溴的衍生物的活性要比相应的氯的衍生物大得多.Polyfluorene and its derivatives is one of the most promising electroluminescent polymers.聚芴衍生物是最有发展潜力的电致发光材料之一.The...
Aircraft production continued to plod along at an agonizingly slow pace.飞机制造业仍旧举步维艰，发展速度之缓很让人头疼。He was destined to plod the path of toil.他注定要在艰辛的道路上跋涉.They had to plod wearily on up the hill.他们不得不迈着疲倦的步子登上山....
If I don't send a picture, he will smell a rat.如果我不寄出照片，他将有所察觉。They were accused of encouraging children to rat on their parents.他们被指控唆使儿童告发自己的父母。The brown rat has prominent ears and a long scaly tail.那只棕鼠两只耳朵向前支着，一...
我们听到一颗子弹的尖啸声.We heard the zip of a bullet.我们对于电话的叮铃声,警笛的尖啸声之类使人紧张的情况总要作出反应.We react to stresses such as the jangle of telephones or the wailing of police sirens.喷射机的尖啸声侵犯了下午的平静.The screech of jet planes violated the peac...
我认识德里克时，他是个非常出色的舞者。When I met Derek he was ever such a good dancer.这场比赛将由来自威尔士的德里克·贝文执法。The match will be refereed by Derek Bevan from Wales.德里克让我相信这个想法是可行的。Derek persuaded me of the feasibility of the idea....
This wet area also attracts frogs, toads and newts.这片潮湿地区也吸引了青蛙、蟾蜍和蝾螈一类的生物。Even here a red Lamborghini Diablo sports car attracts covetous stares.即便在这儿，兰博基尼的红色迪亚博罗跑车也会招来垂涎的目光。Anything with strong gravity attracts other t...